In the code above, we pass the FileStream we’ve declared directly to our StreamWriter object constructor to be used. ' Initialize the FileStream And the associated StreamWriter.ĭim streamWriter As New StreamWriter(fileStream) StreamWriter streamWriter = new StreamWriter(fileStream) Initialize the FileStream and the associated StreamWriter. While we’re at it, there are different kinds of Streams that you can use and they will all work with the StreamWriter as long as they inherit the Stream base class. In our case it’s a FileStream type of Stream so we will attach both together as follow. The StreamWriterĪs you might have guessed the StreamWriter is needed to write data to a Stream. Next, we’ll need to either read or write to the file. Remember that this is the link between our program and the file we want to access, as long as this remains open we can operate but might be limiting other processes depending on the FileShare parameter. FileShare will indicate to the operating system what others wanting to access this file can do, in our case it’s none so they will not be able to access the file at the same time until we close the stream.Here we will start by writing to the file. FileAccess will limit the capabilities of the FileStream to what we actually want to do.Here we want to either create the file if it does not exist or open it if it already does. In this case we’ll want to write information using the FileStream. FileMode will specify what we want to do with the file.The path, well it’s the path to the file you want to create a link to! It can be absolute: exact path to the file, OR relative: where the.Here are the different parts of the FileStream constructor that we’re using.
In the code above, we create the base FileStream to access the data.
Note: for C# the namespace ConsoleFileAccess might be different for you if the name of your project is not ConsoleFileAccess.ĭim targetFilePath As String = "text.txt"ĭim fileStream As New FileStream(targetFilePath, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None) I’ll show how the FileStream class since the File class uses one in the background.įileStream fileStream = new FileStream(targetFilePath, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None) We have two choices here, we could use the File static class or we could use the FileStream class. You can view this stream as a link between your program and the file you’re trying to do operations on.
To access a file you will first need to create an input output stream. Right-click on the file in Solution Explorer and click on Rename, then hit Yes when asked to rename references. Just a quick note for Visual Basic, by default Visual Studio will create a Module named Module1, you might want to rename that module to something like: Program.vb a bit like in C#. To start simply, create a Console type application (.Net Framework with Visual Basic or C#).
Windows forms application txt write how to#
You’ll see it’s not that difficult! In this post I’ll show you how to write to a file and read its content right after, it’s like magic but for real! To accomplish this task we’ll use a more barebone combination of the FileStream, StreamWriter and StreamReader classes. It’s very useful to know how to access files in C# and Visual Basic.
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